如果浏览器支持JS将会输出welcome ，you have javascript on，否则输出JavaScript is off. Please enable to view full site.
<script type="text/javascript">
document.write("Welcome, you have Javascript on.")
</script>
<noscript>JavaScript is off. Please enable to view full site.</noscript>
开心洋葱 , 版权所有丨如未注明 , 均为原创丨未经授权请勿修改 , 转载请注明检测浏览器是否支持JavaScript，并给出提示信息！
